EQUITY (Common Stock Offering) (Details) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
AOG Units (in units)	247,573,364	231,883,861
AOG
Class of Stock [Line Items]
Direct Ownership Interest	100.00%	100.00%
Ares Owners Holdings, L.P.
Class of Stock [Line Items]
AOG Units (in units)	115,199,621	116,641,833
Ares Owners Holdings, L.P. | AOG
Class of Stock [Line Items]
Direct Ownership Interest	46.53%	50.30%
Daily Average Ownership	49.57%	53.20%
AOG
Class of Stock [Line Items]
AOG Units (in units)	132,373,743	115,242,028
AOG | AOG
Class of Stock [Line Items]
Direct Ownership Interest	53.47%	49.70%
Daily Average Ownership	50.43%	46.80%